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crucible: Instructions file for Claude Code

CLAUDE.md

crucible CLAUDE.md is an instructions file for Claude Code from jkitchin/crucible. It costs 968 tokens per session, scanned A, original, MIT.

A set of instructions for Crucible, a personal knowledge base that turns source documents into linked org-mode articles. Org-mode is a plain-text format for structured notes.

In plain words
What is it for?
It helps ingest primary sources, create summaries and topic articles, maintain links and indexes, and work with the knowledge graph database.
Why use it?
It explains where sources, notes, data, articles, and the SQLite database belong, making the knowledge-base workflow predictable for an AI assistant.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is jkitchin/crucible's own configuration. It tells Claude Code how to work on crucible itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything crucible configures →

not rated 10repo 2mo ago A scan 968 tokens original MIT
View source ↗ jkitchin/crucible
Reuse

Borrowing it

Nothing to install: this file belongs to jkitchin/crucible. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/jkitchin/crucible/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/jkitchin/crucible

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for crucible CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/jkitchin/crucible/claude-md.svg)](https://agentmods.dev/instructions/jkitchin/crucible/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/jkitchin/crucible/claude-md"><img src="https://agentmods.dev/badge/instructions/jkitchin/crucible/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 968 This file is loaded in full into every session.
When invoked 968 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00968 $0.00968
Opus 5 $0.00484 $0.00484
Sonnet 5 $0.00194 $0.00194
Haiku 4.5 $0.00097 $0.00097

Measured 7d ago against content hash 457697fd28d9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

crucible CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Crucible: LLM-Compiled Knowledge Base

Overview

Crucible is a personal knowledge base where primary sources are ingested and distilled by an LLM into a structured, interlinked org-mode wiki. The wiki is the LLM's domain; humans rarely edit it directly.

Directory Layout

  • sources/ - Primary source documents, organized by shareability:
    • external/ - Copyrighted material (PDFs, web articles). Gitignored.
      • pdfs/ - Academic papers, reports
      • web/ - Web clippings
    • notebooks/ - Your own ELN entries. NOT gitignored.
    • data/ - Your own experimental data. NOT gitignored.
  • wiki/ - Distilled org-mode articles. Shareable. Organized by type:
    • concepts/ - Concept articles (one topic per file)
    • summaries/ - Per-source summaries
    • comparisons/ - Cross-source comparison articles
    • methods/ - Methodology articles
    • index.org - Auto-maintained master index
  • db/crucible.db - Wiki graph database (SQLite). Tracks sources, articles, concepts, and links between them. Regenerable from wiki content.
  • bin/crucible - CLI entry point
  • src/crucible/ - Python source code

Conventions

Org-Mode Articles

All wiki articles use org-mode format with scimax conventions:

  • Use #+TITLE: for the article title
  • Use #+FILETAGS: for categorization (include article type as a tag)
  • Use a properties drawer on the top heading with:
    • :ARTICLE_TYPE: - concept, summary, comparison, or method
    • :SOURCE_KEYS: - space-separated cite keys of primary sources
    • :STATUS: - draft, reviewed, or verified
    • :CREATED: - ISO date
  • Use org-ref citations: cite:key, citep:key, citet:key
  • Use [[file:path][description]] links for cross-references between articles
  • Write in narrative prose, not bulleted lists (unless content demands enumeration)

Ingest Workflow

Ingestion is a two-step process:

  1. Plan: Read the source, propose articles to create/update, identify concepts and cross-links. Present plan for user approval.
  2. Write: Execute the approved plan, producing org-mode articles.

Read the full file on GitHub · 92 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 92 lines · 968 tokens per session scan A 457697fd28d9

Subscribe to this mod's changes

crucible CLAUDE.md is an instructions file published in the GitHub repository jkitchin/crucible (10 stars, last pushed 2mo ago), licensed MIT. It adds 968 tokens to every session, about $0.0048 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Memory and context
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